Non-transfer cosmetic composition comprising a sequenced polymer

ABSTRACT

The invention relates to a cosmetic composition comprising at least one cosmetically acceptable organic liquid medium and at least one film-forming linear block ethylenic polymer, the said polymer being such that, when it is present in sufficient amount in the composition, the said composition is capable of forming a deposit that has a transfer of less than or equal to 35%. Application to making up and caring for keratin materials, especially the skin and the lips.

The present invention relates to a cosmetic composition comprising aparticular block polymer, which is intended to be applied to humankeratin materials, for instance the skin, the lips, the eyelashes, theeyebrows, the nails and the hair. The composition is more particularlyintended to be applied to the skin or the lips.

The composition according to the invention may be a makeup compositionor a care composition for keratin materials, in particular for the skinand the lips, and preferably a makeup composition.

The makeup composition may be a lip makeup product (lipstick), afoundation, an eyeshadow, a makeup rouge, a concealer product, aneyeliner, a body makeup product, a mascara, a nail varnish or a hairmakeup product.

The care composition may be a body and facial skin care product,especially an antisun product or a skin-colouring product (such as aself-tanning product). The composition may also be a haircare product,especially for holding the hairstyle or shaping the hair.

Lipstick and foundation compositions are commonly used to give the lipsor the skin, and especially the face, an aesthetic colour. These makeupproducts generally contain fatty phases such as waxes and oils, pigmentsand/or fillers and optionally additives, for instance cosmetic ordermatological active agents.

When they are applied to the skin, these compositions have the drawbackof transferring, i.e. of becoming at least partially deposited, andleaving marks, on certain supports with which they may come into contactand especially a glass, a cup, a cigarette, an item of clothing or theskin. This results in mediocre persistence of the applied film, makingit necessary to regularly renew the application of the foundation orlipstick composition. Moreover, the appearance of these unacceptablemarks, especially on blouse collars, may put certain women off usingthis type of makeup.

“Transfer-resistant” lip and skin makeup compositions are thus sought,which have the advantage of forming a deposit that does not become atleast partially deposited onto the supports with which they come intocontact (glass, clothing, cigarette or fabric).

To limit the transfer of cosmetic compositions, it is known practice touse volatile oils, especially in contents of greater than 40% by weight.These volatile oils present in large amount render the makeup product,especially lipstick, uncomfortable for the user: the makeup depositgives a sensation of drying-out and of tautness.

Products in the form of two separate compositions to be applied one overthe other onto the lips to obtain a transfer-resistant makeup result arealso known. For example, the product Lip Finity from Max Factor is atwo-coated product, the base composition (known as the base coat) ofwhich contains a silicone resin and volatile oils, and the surfacecomposition (known as the top coat) of which contains a sucrose ester(as described in patent application WO 97/17057) to improve the comfortof the transfer-resistant makeup product. However, the need to apply twocompositions to make up the face may be unacceptable for certain users.

The aim of the present invention is to provide a novel route for theformulation of a cosmetic composition, especially a makeup composition,which makes it possible to obtain a deposit that has goodtransfer-resistance properties, especially without using a large contentof volatile oils, the said deposit possibly being obtained with thiscomposition alone.

The aim of the invention is also to provide a cosmetic composition,especially a makeup composition, which makes it possible to obtain acomfortable deposit on the skin or the lips.

The inventors have discovered that it is possible to obtain such acomposition by using a particular block polymer as describedhereinbelow. The composition makes it possible to obtain a deposit,especially a makeup result on keratin materials, in particular on theskin or the lips, which has good transfer-resistance properties.Furthermore, the deposit obtained on the skin or the lips does not causethe user any sensation of drying-out or of tautness: the deposit is thuscomfortable.

One subject of the present invention is thus, more specifically, acosmetic composition comprising at least one cosmetically acceptableorganic liquid medium and at least one film-forming linear blockethylenic polymer as described hereinbelow, the composition especiallybeing as defined hereinbelow.

Advantageously, according to a first embodiment of the compositionaccording to the invention, the film-forming linear block ethylenicpolymer is free of styrene and is such that, when it is present insufficient amount in the composition, the said composition is capable offorming a deposit that has a transfer of less than or equal to 35%.

Advantageously, according to a second embodiment of the compositionaccording to the invention, the film-forming linear block ethylenicpolymer is non-elastomeric and is such that when it is present insufficient amount in the composition, the said composition is capable offorming a deposit that has a transfer of less than or equal to 35%.

Advantageously, the composition according to the invention is capable offorming a deposit that has a transfer of less than or equal to 35%,preferably less than or equal to 30%, preferably less than or equal to25%, preferably less than or equal to 20%, preferably less than or equalto 15%, preferably less than or equal to 10% and preferably less than orequal to 5%.

A subject of the invention is also a non-therapeutic cosmetic processfor making up or caring for keratin materials, in particular the skin orthe lips, comprising the application to the keratin materials, inparticular to the skin or the lips, of a composition as defined above.

A subject of the invention is also the use of a composition as definedabove, to obtain a transfer-resistant deposit, especially atransfer-resistant makeup result, on keratin materials, in particular onthe skin or the lips.

A subject of the invention is also the use of a block polymer as definedabove, in a cosmetic composition comprising a cosmetically acceptableorganic liquid medium, to obtain a transfer-resistant deposit,especially a transfer-resistant makeup result, on keratin materials, inparticular on the skin or the lips.

The transfer of the deposit obtained with the composition according tothe invention is determined according to the protocol describedhereinbelow.

A support (rectangle of 40 mm×70 mm and 3 mm thick) of polyethylene foamthat is adhesive on one of the faces, having a density of 33 kg/m³ (soldunder the name RE40X70EP3 from the company Joint Technique Lyonnais Ind)is preheated on a hotplate maintained at a temperature of 40° C. inorder for the surface of the support to be maintained at a temperatureof 33° C.±1° C.

The composition is applied over the entire non-adhesive surface of thesupport, by spreading it using a fine brush to obtain a deposit of about15 μm of the composition, while leaving the support on the hotplate, andthe support is then left to dry for 30 minutes.

After drying, the support is bonded via its adhesive face onto an anvilof diameter 20 mm and equipped with a screw pitch. The support/depositassembly is then cut up using a punch 18 mm in diameter. The anvil isthen screwed onto a press (Statif Manuel Imada SV-2 from the companySomeco) equipped with a tensile testing machine (Imada DPS-20 from thecompany Someco).

White photocopier paper of 80 g/m² is placed on the bed of the press andthe support/deposit assembly is then pressed on the paper at a pressureof 2.5 kg for 30 seconds. After removing the support/deposit assembly,some of the deposit is transferred onto the paper. The colour of thedeposit transferred onto the paper is then measured using a MinoltaCR300 calorimeter, the colour being characterized by the L*, a*, b*calorimetric parameters. The calorimetric parameters L*₀, a*₀ and b*₀ ofthe colour of the plain paper used is determined.

The difference in colour ΔE1 between the colour of the deposittransferred relative to the colour of the plain paper is then determinedby means of the following relationship.ΔE1=√{square root over ((L*−L ₀*)²+(a*−a ₀*)²+(b*−b ₀*)²)}

Moreover, a total transfer reference is prepared by applying thecomposition directly onto a paper identical to the one used previously,at room temperature (25° C.), by spreading the composition using a finebrush and so as to obtain a deposit of about 15 μm of the composition,and the deposit is then left to dry for 30 minutes at room temperature(25° C.). After drying, the calorimetric parameters L*′, a*′ and b*′ ofthe colour of the deposit placed on the paper, corresponding to thereference colour of total transfer, is measured directly. Thecolorimetric parameters L*′₀, a*′₀ and b*′₀ of the colour of the plainpaper used are determined.

The difference in colour ΔE2 between the reference colour of totaltransfer relative to the colour of the plain paper are then determinedby means of the following relationship.ΔE2=√{square root over ((L*′−L ₀*′)²+(a*′−a ₀*′)²+(b*′−b ₀*′)²)}

The transfer of the composition, expressed as a percentage, is equal tothe ratio:100×ΔE1/ΔE2

The measurement is performed on 4 supports in succession and thetransfer value corresponds to the mean of the 4 measurements obtainedwith the 4 supports.

The term “organic liquid” means any non-aqueous product that is liquidat room temperature (25° C.).

The term “cosmetically acceptable organic liquid medium” means a mediumcomprising at least one organic compound that is liquid at roomtemperature (25° C.) and atmospheric pressure (10⁵ Pa), which iscompatible with keratin materials, especially the skin or the lips, suchas the organic solvents and oils commonly used in cosmetic compositions.

The composition according to the invention may comprise a styrene-freefilm-forming linear block ethylenic block polymer.

The term “styrene-free polymer” means a polymer comprising less than10%, preferably less than 5%, preferably less than 2% and morepreferably less than 1%, or even containing no, styrene monomer such asstyrene or styrene derivatives, for instance methylstyrene,chlorostyrene or chloromethylstyrene.

According to one embodiment, the block polymer of the compositionaccording to the invention is derived from aliphatic ethylenic monomers.The term “aliphatic monomer” means a monomer comprising no aromaticgroups.

The term “ethylenic polymer” means a polymer obtained by polymerizationof monomers comprising an ethylenic unsaturation.

The term “block polymer” means a polymer comprising at least twodifferent blocks and preferably at least three different blocks.

The polymer is a polymer of linear structure. In contrast, a polymer ofnon-linear structure is, for example, a polymer of branched structure,of starburst or grafted form, or the like.

The term “film-forming polymer” means a polymer capable of forming, byitself or in the presence of a film-forming auxiliary agent, acontinuous film that adheres to a support, especially to keratinmaterials.

Preferentially, the polymer used in the composition according to theinvention comprises no silicon atoms in its skeleton. The term“skeleton” means the main chain of the polymer, as opposed to thependent side chains.

Advantageously, the said block polymer comprises at least one firstblock and at least one second block that have different glass transitiontemperatures (Tg), the said first and second blocks being linkedtogether via an intermediate block comprising at least one constituentmonomer of the first block and at least one constituent monomer of thesecond block.

The term “at least one block” means one or more blocks.

It is pointed out that, in the text hereinabove and hereinbelow, theterms “first block” and “second block” do not in any way condition theorder of the said blocks in the structure of the polymer.

Preferably, the first and second blocks of the said block polymer aremutually incompatible.

The term “mutually incompatible blocks” means that the blend formed fromthe polymer corresponding to the first block and from the polymercorresponding to the second block is not miscible in the organic liquidthat is the majority amount by weight of the organic liquid medium ofthe composition, at room temperature (25° C.) and atmospheric pressure(10⁵ Pa), for a polymer blend content of greater than or equal to 5% byweight, relative to the total weight of the blend (polymers andsolvent), it being understood that:

-   i) the said polymers are present in the blend in a content such that    the respective weight ratio ranges from 10/90 to 90/10, and that-   ii) each of the polymers corresponding to the first and second    blocks has an average (weight-average or number-average) molecular    mass equal to that of the block polymer ±15%.

In the case where the organic liquid medium comprises a mixture oforganic liquids, and should two or more organic liquids be present inidentical mass proportions, the said polymer blend is immiscible in atleast one of them.

Needless to say, in the case where the organic liquid medium comprisesonly one organic liquid, this liquid is the majority organic liquid.

Advantageously, the majority organic liquid of the composition is theorganic solvent for polymerization of the block polymer or the majorityorganic solvent of the mixture of organic solvents for polymerization ofthe block polymer.

Preferably, the block polymer used in the composition according to theinvention is not water-soluble, i.e. the polymer is not soluble in wateror in a mixture of water and of linear or branched lower monoalcoholscontaining from 2 to 5 carbon atoms, for instance ethanol, isopropanolor n-propanol, without pH modification, at an active material content ofat least 1% by weight, at room temperature (25° C.).

Preferably, the block polymer used in the composition according to theinvention is not an elastomer.

The term “non-elastomeric polymer” means a polymer which, when it issubjected to a constraint intended to pull it (for example by 30%relative to its initial length), does not return to a lengthsubstantially identical to its initial length when the constraintceases.

More specifically, the term “non-elastomeric polymer” denotes a polymerwith an instantaneous recovery R_(i)<50% and a delayed recoveryR_(2h)<70% after having been subjected to a 30% elongation. Preferably,R_(i) is <30% and R_(2h)<50%

More specifically, the non-elastomeric nature of the polymer isdetermined according to the following protocol:

A polymer film is prepared by pouring a solution of the polymer in aTeflon-coated mould, followed by drying for 7 days in an environmentconditioned at 23±5° C. and 50±10% relative humidity.

A film about 100 μm thick is thus obtained, from which are cutrectangular specimens (for example using a punch) 15 mm wide and 80 mmlong.

This sample is subjected to a tensile stress using a machine sold underthe reference Zwick, under the same temperature and humidity conditionsas for the drying.

The specimens are pulled at a speed of 50 mm/min and the distancebetween the jaws is 50 mm, which corresponds to the initial length (l₀)of the specimen.

The instantaneous recovery R_(i) is determined in the following manner:

-   -   the specimen is pulled by 30% (ε_(max)), i.e. about 0.3 times        its initial length (l₀)    -   the constraint is released by applying a return speed equal to        the tensile speed, i.e. 50 mm/min, and the residual elongation        of the specimen is measured as a percentage, after returning to        zero constraint (ε_(i)).

The percentage instantaneous recovery (R_(i)) is given by the followingformula:R _(i)=(ε_(max)−ε_(i))/ε_(max))×100

To determine the delayed recovery, the percentage residual elongation ofthe specimen (ε_(2h)) is measured.

The percentage delayed recovery (R_(2h)) is given by the followingformula:R _(2h)=(ε_(max)−ε_(2h))/ε_(max))×100

Purely as a guide, a polymer according to one embodiment of theinvention has an instantaneous recovery R_(i) of 10% and a delayedrecovery R_(2h) of 30%.

Advantageously, the block polymer used in the composition according tothe invention has a polydispersity index I of greater than 2.

The intermediate block is a block comprising at least one constituentmonomer of the first block and at least one constituent monomer of thesecond block of the polymer, which makes it possible to “compatibilize”these blocks.

The polydispersity index I of the polymer is equal to the ratio of theweight-average mass Mw to the number-average mass Mn.

The weight-average molar mass (Mw) and number-average molar mass (Mn)are determined by gel permeation liquid chromatography (THF solvent,calibration curve established with linear polystyrene standards,refractometric detector).

The weight-average mass (Mw) of the block polymer used in thecomposition according to the invention is preferably less than or equalto 300 000; it ranges, for example, from 35 000 to 200 000 and betterstill from 45 000 to 150 000.

The number-average mass (Mn) of the block polymer used in thecomposition according to the invention is preferably less than or equalto 70 000; it ranges, for example, from 10 000 to 60 000 and betterstill from 12 000 to 50 000.

The polydispersity index of the block polymer used in the compositionaccording to the invention is advantageously greater than 2, for examplegreater than 2 and less than or equal to 9, preferably greater than orequal to 2.5, for example ranging from 2.5 to 8, and better stillgreater than or equal to 2.8, especially from 2.8 to 6.

Each block of the polymer used in the composition according to theinvention is derived from one type of monomer or from several differenttypes of monomer.

This means that each block may consist of a homopolymer or a copolymer;this copolymer constituting the block may in turn be random oralternating.

Advantageously, the intermediate block comprising at least oneconstituent monomer of the first block and at least one constituentmonomer of the second block of the polymer is a random polymer.

Preferably, the intermediate block is derived essentially fromconstituent monomers of the first block and of the second block.

The term “essentially” means at least 85%, preferably at least 90%,better still 95% and even better still 100%.

Advantageously, the intermediate block has a glass transitiontemperature Tg that is between the glass transition temperatures of thefirst and second blocks.

The glass transition temperatures indicated for the first and secondblocks may be theoretical Tg values determined from the theoretical Tgvalues of the constituent monomers of each of the blocks, which may befound in a reference manual such as the Polymer Handbook, 3rd Edition,1989, John Wiley, according to the following relationship, known asFox's law:${{1/{Tg}} = {\sum\limits_{i}\left( {\varpi_{i}/{Tg}_{i}} \right)}},${overscore (ω)}_(i) being the mass fraction of the monomer i in theblock under consideration and Tg_(i) being the glass transitiontemperature of the homopolymer of the monomer i.

Unless otherwise indicated, the Tg values indicated for the first andsecond blocks in the present patent application are theoretical Tgvalues.

Advantageously, the first and second blocks of the polymer are such thatthe difference between the glass transition temperatures of the firstand second blocks is generally greater than 10° C., preferably greaterthan 20° C. and better still greater than 30° C.

In particular, the first block may be chosen from:

-   a) a block with a Tg of greater than or equal to 40° C.,-   b) a block with a Tg of less than or equal to 20° C.,-   c) a block with a Tg of between 20 and 40° C., and the second block    can be chosen from a category a), b) or c) different from the first    block.

In the present invention, the expression: “between . . . and . . . ” isintended to denote a range of values for which the limits mentioned areexcluded, and “from . . . to . . . ” and “ranging from . . . to . . . ”are intended to denote a range of values for which the limits areincluded.

a) Block With a Tg of Greater Than or Equal to 40° C.

The block with a Tg of greater than or equal to 40° C. has, for example,a Tg ranging from 40 to 150° C., preferably greater than or equal to 50°C., for example ranging from 50° C. to 120° C. and better still greaterthan or equal to 60° C., for example ranging from 60° C. to 120° C.

The block with a Tg of greater than or equal to 40° C. may be ahomopolymer or a copolymer.

In the case where this block is a homopolymer, it is derived from amonomer whose homopolymer has a glass transition temperature of greaterthan or equal to 40° C.

In the case where the first block is a copolymer, it may be totally orpartially derived from one or more monomers, the nature andconcentration of which are chosen such that the Tg of the resultingcopolymer is greater than or equal to 40° C. The copolymer may comprise,for example:

monomers whose homopolymer has a Tg of greater than or equal to 40° C.,for example a Tg ranging from 40 to 150° C., preferably greater than orequal to 50° C., for example ranging from 50° C. to 120° C. and betterstill greater than or equal to 60° C., for example ranging from 60° C.to 120° C., and

monomers whose homopolymer has a Tg of less than 40° C., chosen frommonomers whose homopolymer has a Tg of between 20 and 40° C. and/ormonomers whose homopolymer has a Tg of less than or equal to 20° C., forexample a Tg ranging from −100 to 20° C., preferably less than 15° C.,especially ranging from −80° C. to 15° C. and better still less than 10°C., for example ranging from −50° C. to 0° C., as described later.

The monomers whose homopolymer has a glass transition temperature ofgreater than or equal to 40° C. are chosen, preferably, from thefollowing monomers, also known as the main monomers:

methacrylates of formula CH₂═C(CH₃)—COOR₁

in which R₁ represents a linear or branched unsubstituted alkyl groupcontaining from 1 to 4 carbon atoms, such as a methyl, ethyl, propyl orisobutyl group or R₁ represents a C₄ to C₁₂ cycloalkyl group,

acrylates of formula CH₂═CH—COOR₂

in which R₂ represents a C₄ to C₁₂ cycloalkyl group such as an isobornylgroup or a tert-butyl group,

(meth)acrylamides of formula:

in which R₇ and R₈, which may be identical or different, each representa hydrogen atom or a linear or branched C₁ to C₁₂ alkyl group such as ann-butyl, t-butyl, isopropyl, isohexyl, isooctyl or isononyl group; or R₇represents H and R₈ represents a 1,1-dimethyl-3-oxobutyl group,and R′ denotes H or methyl. Examples of monomers that may be mentionedinclude N-butylacrylamide, N-t-butylacrylamide, N-isopropylacrylamide,N,N-dimethylacrylamide and N,N-dibutylacrylamide,

and mixtures thereof.

Main monomers that are particularly preferred are methyl methacrylate,isobutyl (meth)acrylate and isobornyl (meth)acrylate, and mixturesthereof.

b) Block With a Tg of Less Than or Equal to 20° C.

The block with a Tg of less than or equal to 20° C. has, for example, aTg ranging from −100 to 20° C., preferably less than or equal to 15° C.,especially ranging from −80° C. to 15° C. and better still less than orequal to 10° C., for example ranging from −50° C. to 0° C.

The block with a Tg of less than or equal to 20° C. may be a homopolymeror a copolymer.

In the case where this block is a homopolymer, it is derived frommonomers which are such that the homopolymers prepared from thesemonomers have glass transition temperatures of less than or equal to 20°C. This second block may be a homopolymer consisting of only one type ofmonomer (for which the Tg of the corresponding homopolymer is less thanor equal to 20° C.)

In the case where the block with a Tg of less than or equal to 20° C. isa copolymer, it may be totally or partially derived from one or moremonomers, the nature and concentration of which are chosen such that theTg of the resulting copolymer is less than or equal to 20° C.

It may comprise, for example

one or more monomers whose corresponding homopolymer has a Tg of lessthan or equal to 20° C., for example a Tg ranging from −100° C. to 20°C., preferably less than 15° C., especially ranging from −80° C. to 15°C. and better still less than 10° C., for example ranging from −50° C.to 0° C., and

one or more monomers whose corresponding homopolymer has a Tg of greaterthan 20° C., such as monomers with a Tg of greater than or equal to 40°C., for example a Tg ranging from 40 to 150° C., preferably greater thanor equal to 50° C., for example ranging from 50° C. to 120° C. andbetter still greater than or equal to 60° C., for example ranging from60° C. to 120° C. and/or monomers with a Tg of between 20 and 40° C., asdescribed above.

Preferably, the block with a Tg of less than or equal to 20° C. is ahomopolymer.

The monomers whose homopolymer has a Tg of less than or equal to 20° C.are preferably chosen from the following monomers, or main monomer:

acrylates of formula CH₂═CHCOOR₃,

R₃ representing a linear or branched C₁ to C₁₂ unsubstituted alkylgroup, with the exception of the tert-butyl group, in which one or morehetero atoms chosen from O, N and S is (are) optionally intercalated,

methacrylates of formula CH₂═C(CH₃)—COOR₄,

R₄ representing a linear or branched C₆ to C₁₂ unsubstituted alkylgroup, in which one or more hetero atoms chosen from O, N and S is (are)optionally intercalated;

vinyl esters of formula R₅—CO—O—CH═CH₂

in which R₅ represents a linear or branched C₄ to C₁₂ alkyl group,

ethers of vinyl alcohol and of a C₄ to C₁₂ alcohol,

N—(C₄ to C₁₂)alkyl acrylamides, such as N-octylacryl-amide,

and mixtures thereof.

The main monomers that are particularly preferred for the block with aTg of less than or equal to 20° C. are alkyl acrylates whose alkyl chaincontains from 1 to 10 carbon atoms, with the exception of the tert-butylgroup, such as methyl acrylate, isobutyl acrylate and 2-ethylhexylacrylate, and mixtures thereof.

c) Block With a Tg of Between 20 and 40° C.

The block with a Tg of between 20 and 40° C. may be a homopolymer or acopolymer.

In the case where this block is a homopolymer, it is derived from amonomer (or main monomer) whose homopolymer has a glass transitiontemperature of between 20 and 40° C.

The monomers whose homopolymer has a glass transition temperature ofbetween 20 and 40° C. are preferably chosen from n-butyl methacrylate,cyclodecyl acrylate, neopentyl acrylate and isodecylacrylamide, andmixtures thereof.

In the case where the block with a Tg of between 20 and 40° C. is acopolymer, it is totally or partially derived from one or more monomers(or main monomer) whose nature and concentration are chosen such thatthe Tg of the resulting copolymer is between 20 and 40° C.

Advantageously, the block with a Tg of between 20 and 40° C. is acopolymer totally or partially derived from:

main monomers whose corresponding homopolymer has a Tg of greater thanor equal to 40° C., for example a Tg ranging from 40° C. to 150° C.,preferably greater than or equal to 50° C., for example ranging from 50to 120° C. and better still greater than or equal to 60° C., for exampleranging from 60° C. to 120° C., as described above, and

main monomers whose corresponding homopolymer has a Tg of less than orequal to 20° C., for example a Tg ranging from −100 to 20° C.,preferably less than or equal to 15° C., especially ranging from −80° C.to 15° C. and better still less than or equal to 10° C., for exampleranging from −50° C. to 0° C., as described above, the said monomersbeing chosen such that the Tg of the copolymer forming the first blockis between 20 and 40° C.

Such main monomers are chosen, for example, from methyl methacrylate,isobornyl acrylate and methacrylate, butyl acrylate and 2-ethylhexylacrylate, and mixtures thereof.

Preferably, the proportion of the second block with a Tg of less than orequal to 20° C. ranges from 10% to 85%, better still from 20% to 70% andeven better still from 20% to 50% by weight of the polymer.

Preferably, the polymer used in the composition according to theinvention does not comprise any styrene monomers such as styrene orstyrene derivatives, for instance methylstyrene, chlorostyrene orchloromethylstyrene.

However, each of the blocks may contain in small proportion at least oneconstituent monomer of the other block.

Thus, the first block may contain at least one constituent monomer ofthe second block, and vice versa.

Each of the first and/or second blocks may comprise, in addition to themonomers indicated above, one or more other monomers known as additionalmonomers, which are different from the main monomers mentioned above.

The nature and amount of this or these additional monomer(s) are chosensuch that the block in which they are present has the desired glasstransition temperature.

This additional monomer is chosen, for example, from:

a) hydrophilic monomers such as:

ethylenically unsaturated monomers comprising at least one carboxylic orsulfonic acid function, for instance:

acrylic acid, methacrylic acid, crotonic acid, maleic anhydride,itaconic acid, fumaric acid, maleic acid, acrylamidopropanesulfonicacid, vinylbenzoic acid, vinylphosphoric acid, and salts thereof,

ethylenically unsaturated monomers comprising at least one tertiaryamine function, for instance 2-vinylpyridine, 4-vinylpyridine,dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate anddimethylaminopropylmethacrylamide, and salts thereof,

methacrylates of formula CH₂═C(CH₃)—COOR₆

in which R₆ represents a linear or branched alkyl group containing from1 to 4 carbon atoms, such as a methyl, ethyl, propyl or isobutyl group,the said alkyl group being substituted with one or more substituentschosen from hydroxyl groups (for instance 2-hydroxypropyl methacrylateand 2-hydroxyethyl methacrylate) and halogen atoms (Cl, Br, I or F),such as trifluoroethyl methacrylate,

methacrylates of formula CH₂═C(CH₃)—COOR₉,

R₉ representing a linear or branched C₆ to C₁₂ alkyl group in which oneor more hetero atoms chosen from O, N and S is (are) optionallyintercalated, the said alkyl group being substituted with one or moresubstituents chosen from hydroxyl groups and halogen atoms (Cl, Br, I orF);

acrylates of formula CH₂═CHCOOR₁₀,

R₁₀ representing a linear or branched C₁ to C₁₂ alkyl group substitutedwith one or more substituents chosen from hydroxyl groups and halogenatoms (Cl, Br, I or F), such as 2-hydroxypropyl acrylate and2-hydroxyethyl acrylate, or R₁₀ represents a C₁ to C₁₂ alkyl-O—POE(polyoxyethylene) with repetition of the oxyethylene unit 5 to 30 times,for example methoxy-POE, or

R₁₀ represents a polyoxyethylenated group comprising from 5 to 30ethylene oxide units

b) ethylenically unsaturated monomers comprising one or more siliconatoms, such as methacryloxypropyltri-methoxysilane andmethacryloxypropyltris(trimethyl-siloxy)silane,

and mixtures thereof.

Additional monomers that are particularly preferred are acrylic acid,methacrylic acid and trifluoroethyl methacrylate, and mixtures thereof.

According to one preferred embodiment, the polymer used in thecomposition according to the invention is a non-silicone polymer, i.e. apolymer free of silicon atoms.

This or these additional monomer(s) generally represent(s) an amount ofless than or equal to 30% by weight, for example from 1% to 30% byweight, preferably from 5% to 20% by weight and more preferably from 7%to 15% by weight, relative to the total weight of the first and/orsecond blocks.

Preferably, each of the first and second blocks comprises at least onemonomer chosen from (meth)acrylic acid esters as defined above, andoptionally one monomer chosen from (meth)acrylic acid, and mixturesthereof.

Advantageously, each of the first and second blocks is totally derivedfrom at least one monomer chosen from (meth)acrylic acid esters asdefined above, and optionally one monomer chosen from (meth)acrylicacid, and mixtures thereof.

The polymer used in the composition according to the invention may beobtained by free-radical solution polymerization according to, thefollowing preparation process:

a portion of the polymerization solvent is introduced into a suitablereactor and heated until the adequate temperature for the polymerizationis reached (typically between 60 and 120° C.),

once this temperature is reached, the constituent monomers of the firstblock are introduced in the presence of a portion of the polymerizationinitiator,

after a time T corresponding to a maximum degree of conversion of 90%,the constituent monomers of the second block and the rest of theinitiator are introduced,

the mixture is left to react for a time T′ (ranging from 3 to 6 hours),after which the mixture is cooled to room temperature,

the polymer dissolved in the polymerization solvent is obtained.

The term “polymerization solvent” means a solvent or a mixture ofsolvents. The polymerization solvent may be chosen especially from ethylacetate, butyl acetate, alcohols such as isopropanol or ethanol, andaliphatic alkanes such as isododecane, and mixtures thereof. Preferably,the polymerization solvent is a mixture of butyl acetate and isopropanolor isododecane.

According to a first embodiment, the block polymer used in thecomposition according to the invention comprises at least one(especially one) first block with a Tg of greater than or equal to 40°C., as described above in a) and at least one (especially one) secondblock with a Tg of less than or equal to 20° C., as described above inb).

Preferably, the first block with a Tg of greater than or equal to 40° C.is a copolymer derived from monomers whose homopolymer has a glasstransition temperature of greater than or equal to 40° C., such as themonomers described above.

Advantageously, the second block with a Tg of less than or equal to 20°C. is a homopolymer, especially derived from monomers as describedabove.

Preferably, the proportion of the block with a Tg of greater than orequal to 40° C. ranges from 20% to 90%, better still from 30% to 80% andeven better still from 50% to 70% by weight of the polymer.

Preferably, the proportion of the block with a Tg of less than or equalto 20° C. ranges from 5% to 75%, preferably from 15% to 50% and betterstill from 25% to 45% by weight of the polymer.

Thus, according to a first variant, the block polymer used in thecomposition according to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for examplehaving a Tg ranging from 70 to 110° C., which is a methylmethacrylate/acrylic acid copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from 0 to 20° C., which is a methyl acrylate homopolymer, and

an intermediate block that is a methyl methacrylate/acrylic acid/methylacrylate copolymer.

According to a second variant, the block polymer used in the compositionaccording to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 70 to 100° C., which is a methyl methacrylate/acrylicacid/trifluoroethyl methacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from 0 to 20° C., which is a methyl acrylate homopolymer, and

an intermediate block that is a methyl methacrylate/acrylic acid/methylacrylate/trifluoroethyl methacrylate random copolymer.

According to a third variant, the block polymer used in the compositionaccording to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 85 to 115° C., which is an isobornyl acrylate/isobutylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −85 to −55° C., which is a 2-ethylhexyl acrylatehomopolymer, and

an intermediate block, which is an isobornyl acrylate/isobutylmethacrylate/2-ethylhexyl acrylate random copolymer.

According to a fourth variant, the block polymer used in the compositionaccording to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 85 to 115° C., which is an isobornyl acrylate/methylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −85 to −55° C., which is a 2-ethylhexyl acrylatehomopolymer, and

an intermediate block that is an isobornyl acrylate/methylmethacrylate/2-ethylhexyl acrylate random copolymer.

According to a fifth variant, the block polymer used in the compositionaccording to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 95 to 125° C., which is an isobornyl acrylate/isobornylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −85 to −55° C., which is a 2-ethylhexyl acrylatehomopolymer, and

an intermediate block that is an isobornyl acrylate/isobornylmethacrylate/2-ethylhexyl acrylate random copolymer.

According to a sixth variant, the block polymer used in the compositionaccording to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 85 to 115° C., which is an isobornyl methacrylate/isobutylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −35 to −5° C., which is an isobutyl acrylate homopolymer,and

an intermediate block that is an isobornyl methacrylate/isobutylmethacrylate/isobutyl acrylate random copolymer.

According to a seventh variant, the block polymer used in thecomposition according to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 95 to 125° C., which is an isobornyl acrylate/isobornylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −35 to −5° C., which is an isobutyl acrylate homopolymer,and

an intermediate block that is an isobornyl methacrylate/isobornylmethacrylate/isobutyl acrylate random copolymer.

According to an eighth variant, the block polymer used in thecomposition according to the invention may comprise:

a first block with a Tg of greater than or equal to 40° C., for exampleranging from 60 to 90° C., which is an isobornyl acrylate/isobutylmethacrylate copolymer,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −35 to −5° C., which is an isobutyl acrylate homopolymer,and

an intermediate block that is an isobornyl acrylate/isobutylmethacrylate/isobutyl acrylate random copolymer.

According to a second embodiment, the polymer used in the compositionaccording to the invention comprises at least one (especially one) firstblock with a glass transition temperature (Tg) of between 20 and 40° C.,in accordance with the blocks described in c) and at least one(especially one) second block with a glass transition temperature ofless than or equal to 20° C., as described above in b) or a glasstransition temperature of greater than or equal to 40° C., as describedin a) above.

Preferably, the proportion of the first block with a Tg of between 20and 40° C. ranges from 10% to 85%, better still from 30% to 80% and evenbetter still from 50% to 70% by weight of the polymer.

When the second block is a block with a Tg of greater than or equal to40° C., it is preferably present in a proportion ranging from 10% to85%, better still from 20% to 70% and even better still from 30% to 70%by weight of the polymer.

When the second block is a block with a Tg of less than or equal to 20°C., it is preferably present in a proportion ranging from 10% to 85%,better still from 20% to 70% and even better still from 20% to 50% byweight of the polymer.

Preferably, the first block with a Tg of between 20 and 40° C. is acopolymer derived from monomers which are such that the correspondinghomopolymer has a Tg of greater than or equal to 40° C., and frommonomers which are such that the corresponding homopolymer has a Tg ofless than or equal to 20° C.

Advantageously, the second block with a Tg of less than or equal to 20°C. or with a Tg of greater than or equal to 40° C. is a homopolymer.

Thus, according to a first variant of this second embodiment, thepolymer used in the composition according to the invention may comprise:

a first block with a Tg of between 20 and 40° C., for example with a Tgof 25 to 39° C., which is a copolymer comprising at least one methylacrylate monomer, at least one methyl methacrylate monomer and at leastone acrylic acid monomer,

a second block with a Tg of greater than or equal to 40° C., for exampleranging from 85 to 125° C., which is a homopolymer composed of methylmethacrylate monomers, and

an intermediate block comprising at least one methyl acrylate or methylmethacrylate monomer, and

an intermediate block comprising methyl methacrylate, at least oneacrylic acid monomer and at least one methyl acrylate monomer.

According to a second variant of this second embodiment, the polymerused in the composition according to the invention may comprise:

a first block with a Tg of between 20 and 40° C., for example with a Tgof 21 to 39° C., which is a copolymer comprising isobornylacrylate/isobutyl methacrylate/2-ethylhexyl acrylate,

a second block with a Tg of less than or equal to 20° C., for exampleranging from −65 to −35° C., which is a methyl methacrylate homopolymer,and

an intermediate block that is an isobornyl acrylate/isobutylmethacrylate/2-ethylhexyl acrylate random copolymer.

According to a third variant of this second embodiment, the polymer usedin the composition according to the invention may comprise:

a first block with a Tg of between 20 and 40° C., for example with a Tgfrom 21 to 39° C., which is an isobornyl acrylate/methylacrylate/acrylic acid copolymer,

a second block with a Tg of greater than or equal to 40° C., for exampleranging from 85 to 115° C., which is an isobornyl acrylate homopolymer,and

an intermediate block that is an isobornyl acrylate/methylacrylate/acrylic acid random copolymer.

The block polymer may be present in the composition according to theinvention in a content ranging from 0.1% to 60% by weight, preferablyranging from 0.5% to 50% by weight and more preferably ranging from 1%to 40% by weight, relative to the total weight of the composition.

According to one particularly preferred embodiment, the organic liquidmedium of the composition contains at least one organic liquid that isthe or one of the organic solvent(s) for polymerization of the blockpolymer as described above. Advantageously, the said organicpolymerization solvent is the organic liquid that is present in majorityamount by weight in the organic liquid medium of the cosmeticcomposition.

The cosmetic composition according to the invention comprises acosmetically acceptable medium, i.e. a medium that is compatible withkeratin materials, for instance the skin, the lips, the hair, theeyelashes, the eyebrows and the nails.

The composition according to the invention may comprise at least onevolatile oil.

The term “oil” means any non-aqueous medium that is liquid at roomtemperature (25° C.) and atmospheric pressure (760 mmHg), which iscompatible with application to the skin, mucous membranes (lips) and/orthe integuments (nails, eyelashes, eyebrows or hair).

The term “volatile oil” means any non-aqueous medium capable ofevaporating from the skin or the lips in less than one hour, especiallyhaving a vapour pressure, at room temperature and atmospheric pressure,ranging from 10⁻³ to 300 mmHg (0.13 Pa to 40 000 Pa).

According to the invention, one or more volatile oils may be used.

These oils may be hydrocarbon-based oils or silicone oils optionallycomprising alkyl or alkoxy groups that are pendent or at the end of asilicone chain.

The term “hydrocarbon-based oil” means an oil essentially formed from,or even consisting of, carbon and hydrogen atoms, and possibly oxygen ornitrogen atoms, and containing no silicon or fluorine atoms. It maycontain alcohol, ester, ether, carboxylic acid, amine and/or amidegroups.

As volatile silicone oils that may be used in the invention, mention maybe made of linear or cyclic silicones containing from 2 to 7 siliconatoms, these silicones optionally comprising alkyl or alkoxy groupscontaining from 1 to 10 carbon atoms. As volatile silicone oils that maybe used in the invention, mention may be made especially ofoctamethylcyclotetra-siloxane, decamethylcyclopentasiloxane,dodecamethyl-cyclohexasiloxane, heptamethylhexyltrisiloxane,hepta-methyloctyltrisiloxane, octamethyltrisiloxane anddecamethyltetrasiloxane, and mixtures thereof.

As other volatile oils that may be used in the invention, C₈-C₁₆, forinstance isododecane, isodecane and isohexadecane and, for example, theoils sold under the trade names Isopar and Permethyl, and especiallyisododecane (Permethyl 99 A), are especially preferred.

The volatile oil may be present in the composition according to theinvention in a content ranging from 1% to 70% by weight, preferablyranging from 5% to 50% by weight and preferentially ranging from 10% to35% by weight, relative to the total weight of the composition.

The composition according to the invention may comprise a non-volatileoil.

The term “non-volatile oil” means an oil that is capable of remaining onthe skin at room temperature (25° C.) and atmospheric pressure for atleast one hour and especially having a non-zero vapour pressure, at roomtemperature (25° C.) and atmospheric pressure, of less than 0.01 mmHg(1.33 Pa).

The non-volatile oil may be chosen from hydrocarbon-based and siliconenon-volatile oils.

The non-volatile oil may be chosen from polar or apolar non-volatileoils and polar non-volatile oils, and mixtures thereof.

The non-volatile oil may be present in the composition according to theinvention in a content ranging from 1% to 80% by weight, preferablyranging from 5% to 60% by weight, and preferentially ranging from 10% to50% by weight, especially ranging from 20% to 50% by weight, relative tothe total weight of the composition.

As non-volatile oil that may be used in the invention, mention may bemade of:

non-volatile hydrocarbon-based oils such as liquid paraffin (orpetroleum jelly), squalane, hydrogenated polyisobutylene (parleam oil),perhydrosqualene, mink oil, turtle oil, soybean oil, sweet almond oil,beauty-leaf oil, palm oil, grapeseed oil, sesame seed oil, maize oil,arara oil, rapeseed oil, sunflower oil, cotton seed oil, apricot oil,castor oil, avocado oil, jojoba oil, olive oil or cereal germ oil;lanolic acid, oleic acid, lauric acid or stearic acid esters; fattyesters, especially of C₁₂-C₃₆, such as isopropyl myristate, isopropylpalmitate, butyl stearate, hexyl laurate, diisopropyl adipate, isononylisononanoate, 2-ethylhexyl palmitate, 2-hexyldecyl laurate,2-octyl-decyl palmitate, 2-octyldodecyl myristate or lactate,bis(2-ethylhexyl) succinate, diisostearyl malate, and glyceryl ordiglyceryl triisostearate; higher fatty acids, especially of C₁₄-C₂₂,such as myristic acid, palmitic acid, stearic acid, behenic acid, oleicacid, linoleic acid, linolenic acid or isostearic acid; higher fattyalcohols, especially of C₁₆-C₂₂, such as cetanol, oleyl alcohol,linoleyl alcohol, linolenyl alcohol, isostearyl alcohol oroctyldodecanol; and mixtures thereof;

non-volatile silicone oils such as non-volatile polydimethylsiloxanes(PDMSs); polydimethylsiloxanes comprising alkyl, alkoxy or phenylgroups, pendent or at the end of a silicone chain, these groupscontaining from 2 to 24 carbon atoms; phenyl silicones, for instancephenyl trimethicones, phenyl dimethicones,phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones anddiphenylmethyldiphenyltrisiloxanes; polysiloxanes modified with fattyacids (especially of C₈-C₂₀), fatty alcohols (especially of C₈-C₂₀) orpolyoxyalkylenes (especially polyoxyethylene and/or polyoxypropylene);amino silicones; silicones containing hydroxyl groups; fluoro siliconescomprising a fluoro group that is pendent or at the end of a siliconechain, containing from 1 to 12 carbon atoms, some or all of thehydrogens of which are replaced with fluorine atoms; and mixturesthereof.

The composition according to the invention may also comprise at leastsome fatty substances that are solid at room temperature, chosenespecially from waxes, pasty fatty substances and gums, and mixturesthereof. These fatty substances may be of animal, plant, mineral orsynthetic origin.

For the purposes of the present invention, the term “wax” means alipophilic compound that is solid at room temperature (25° C.), whichundergoes a reversible solid/liquid change of state, and which has amelting point of greater than or equal to 30° C., which may be up to120° C.

The melting point of the wax may be measured using a differentialscanning calorimeter (DSC), for example the calorimeter sold under thename DSC 30 by the company Mettler.

The waxes may be hydrocarbon-based waxes, fluoro waxes and/or siliconewaxes and may be of plant, mineral, animal and/or synthetic origin. Inparticular, the waxes have a melting point of greater than 25° C. andbetter still greater than 45° C.

As waxes that may be used in the composition of the invention, mentionmay be made of beeswax, carnauba wax or candelilla wax, paraffin,microcrystal-line waxes, ceresin or ozokerite, synthetic waxes, forinstance polyethylene waxes or Fischer-Tropsch waxes, and siliconewaxes, for instance alkyl or alkoxy dimethicones containing from 16 to45 carbon atoms.

The gums are generally polydimethylsiloxanes (PDMSs) of high molecularweight or cellulose gums or polysaccharides, and the pasty substancesare generally hydrocarbon-based compounds, for instance lanolins andderivatives thereof, or PDMSs.

The nature and amount of the solid substances depend on the desiredmechanical properties and textures. As a guide, the composition maycontain from 0.1% to 50% by weight and better still from 1% to 30% byweight of waxes, relative to the total weight of the composition.

The composition may thus comprise water or a mixture of water andhydrophilic organic solvent(s), for instance alcohols and especiallylinear or branched lower monoalcohols containing from 2 to 5 carbonatoms, for instance ethanol, isopropanol or n-propanol, and polyols, forinstance glycerol, diglycerol, propylene glycol, sorbitol or pentyleneglycol, and polyethylene glycols, or hydrophilic C₂ ethers and C₂-C₄aldehydes.

The water or the mixture of water and hydrophilic organic solvents maybe present in the composition according to the invention in a contentranging from 0.1% to 99% by weight and preferably from 10% to 80% byweight, relative to the total weight of the composition.

The composition may comprise, besides the block polymer described aboveaccording to the invention, an additional polymer such as a film-formingpolymer. According to the present invention, the term “film-formingpolymer” means a polymer that is capable of forming, by itself or in thepresence of an auxiliary film-forming agent, a continuous film thatadheres to a support, especially to keratin materials.

Among the film-forming polymers that may be used in the composition ofthe present invention, mention may be made of synthetic polymers, offree-radical type or of polycondensate type, polymers of natural origin,and mixtures thereof. Film-forming polymers that may be mentioned inparticular include acrylic polymers, polyurethanes, polyesters,polyamides, polyureas and cellulose-based polymers, for instancenitrocellulose.

The composition according to the invention may also comprise one or moredyestuffs chosen from water-soluble dyes and pulverulent dyestuffs, forinstance pigments, nacres and flakes that are well known to thoseskilled in the art. The dyestuffs may be present in the composition in acontent ranging from 0.01% to 50% by weight and preferably from 0.01% to30% by weight, relative to the weight of the composition.

The term “pigments” should be understood as meaning white or coloured,mineral or organic particles of any shape, which are insoluble in thephysiological medium and which are intended to colour the composition.

The term “nacres” should be understood as meaning iridescent particlesof any shape, produced especially by certain molluscs in their shell, oralternatively synthesized.

The pigments may be white or coloured, and mineral and/or organic. Amongthe mineral pigments that may be mentioned are titanium dioxide,optionally surface-treated, zirconium oxide or cerium oxide, and alsozinc oxide, iron oxide (black, yellow or red) or chromium oxide,manganese violet, ultramarine blue, chromium hydrate and ferric blue,and metal powders, for instance aluminium powder or copper powder.

Among the organic pigments that may be mentioned are carbon black,pigments of D & C type, and lakes based on cochineal carmine or onbarium, strontium, calcium or aluminium.

Mention may also be made of pigments with an effect, such as particlescomprising a natural or synthetic, organic or mineral substrate, forexample glass, acrylic resins, polyester, polyurethane, polyethyleneterephthalate, ceramics or aluminas, the said substrate being uncoatedor coated with metal substances, for instance aluminium, gold, silver,platinum, copper or bronze, or with metal oxides, for instance titaniumdioxide, iron oxide or chromium oxide, and mixtures thereof.

The nacreous pigments may be chosen from white nacreous pigments such asmica coated with titanium or with bismuth oxychloride, coloured nacreouspigments such as titanium mica coated with iron oxides, titanium micacoated especially with ferric blue or chromium oxide, titanium micacoated with an organic pigment of the abovementioned type and alsonacreous pigments based on bismuth oxychloride. Interference pigments,especially liquid-crystal pigments or multilayer pigments, may also beused.

The water-soluble dyes are, for example, beetroot juice or methyleneblue.

The composition according to the invention may comprise at least onefiller, especially in a content ranging from 0.01% to 50% by weight andpreferably ranging from 0.01% to 30% by weight, relative to the totalweight of the composition. The term “fillers” should be understood asmeaning colourless or white, mineral or synthetic particles of anyshape, which are insoluble in the medium of the composition,irrespective of the temperature at which the composition ismanufactured. These fillers serve especially to modify the rheology orthe texture of the composition.

The fillers may be mineral or organic in any form, platelet-shaped,spherical or oblong, irrespective of the crystallographic form (forexample leaflet, cubic, hexagonal, orthorhombic, etc.). Mention may bemade of talc, mica, silica, kaolin, polyamide (Nylon®) powders (Orgasol®from Atochem), poly-β-alanine powder and polyethylene powder, powders oftetrafluoroethylene polymers (Teflon®), lauroyllysine, starch, boronnitride, hollow polymer microspheres such as those of polyvinylidenechloride/acrylonitrile, for instance Exapancel® (Nobel Industrie) oracrylic acid copolymers (Polytrap® from the company Dow Corning) andsilicone resin microbeads (for example Tospearls® from Toshiba),elastomeric polyorganosiloxane particles, precipitated calciumcarbonate, magnesium carbonate, magnesium hydrocarbonate,hydroxyapatite, hollow silica microspheres (Silica Beads® fromMaprecos), glass or ceramic microcapsules, and metal soaps derived fromorganic carboxylic acids containing from 8 to 22 carbon atoms andpreferably from 12 to 18 carbon atoms, for example zinc, magnesium orlithium stearate, zinc laurate or magnesium myristate.

The composition according to the invention may also contain ingredientscommonly used in cosmetics, such as vitamins, thickeners, traceelements, softeners, sequestering agents, fragrances, acidifying orbasifying agents, preserving agents, sunscreens, surfactants,antioxidants, agents for preventing hair loss, antidandruff agents andpropellants, or mixtures thereof.

Needless to say, a person skilled in the art will take care to selectthis or these optional additional compound(s), and/or the amountthereof, such that the advantageous properties of the correspondingcomposition according to the invention are not, or are notsubstantially, adversely affected by the envisaged addition.

The composition according to the invention may especially be in the formof a suspension, a dispersion, a solution, a gel, an emulsion,especially an oil-in-water (O/W) emulsion, a water-in-oil (W/O) emulsionor a multiple emulsion (W/O/W or polyol/O/W or O/W/o emulsion), in theform of a cream, a paste, a mousse, a dispersion of vesicles, especiallyof ionic or nonionic lipids, a two-phase or multi-phase lotion, a spray,a powder, a paste, especially a soft paste (especially a paste with adynamic viscosity at 25° C. of about from 0.1 to 40 Pa·s under a shearrate of 200 s⁻¹, after measurement for 10 minutes in cone/plategeometry). The composition may be anhydrous; for example, it may be ananhydrous stick or paste. The composition may be a leave-in composition.

A person skilled in the art may select the appropriate galenical form,and also the method for preparing it, on the basis of his generalknowledge, taking into account firstly the nature of the constituentsused, especially their solubility in the support, and secondly theintended application for the composition.

According to another aspect, the invention also relates to a cosmeticassembly comprising:

-   -   i) a container delimiting at least one compartment, the said        container being closed by a closing member; and    -   ii) a composition placed inside the said compartment, the        composition being in accordance with any one of the preceding        claims.

The container may be in any adequate form. It may especially be in theform of a bottle, a tube, a jar, a case, a box, a sachet or a carton.

The closing member may be in the form of a removable stopper, a lid, acap, a tear-off strip or a capsule, especially of the type comprising abody attached to the container and a cover cap articulated on the body.It may also be in the form of a member for selectively closing thecontainer, especially a pump, a valve or a flap valve.

The container may be combined with an applicator, especially in the formof a brush comprising an arrangement of bristles maintained by a twistedwire. Such a twisted brush is described especially in patent U.S. Pat.No. 4,887,622. It may also be in the form of a comb comprising aplurality of application members, obtained especially by moulding. Suchcombs are described, for example, in patent FR 2 796 529. The applicatormay be in the form of a fine brush, as described, for example, in patentFR 2 722 380. The applicator may be in the form of a block of foam or ofelastomer, a felt or a spatula. The applicator may be free (tuft orsponge) or securely fastened to a rod borne by the closing member, asdescribed, for example, in patent U.S. Pat. No. 5,492,426. Theapplicator may be securely fastened to the container, as described, forexample, in patent FR 2 761 959.

The product may be contained directly in the container, or indirectly.By way of example, the product may be arranged on an impregnatedsupport, especially in the form of a wipe or a pad, and arranged(individually or in plurality) in a box or in a sachet. Such a supportincorporating the product is described, for example, in patentapplication WO 01/03538.

The closing member may be coupled to the container by screwing.Alternatively, the coupling between the closing member and the containeris done other than by screwing, especially via a bayonet mechanism, byclick-fastening, gripping, welding, bonding or by magnetic attraction.The term “click-fastening” in particular means any system involving thecrossing of a bead or cord of material by elastic deformation of aportion, especially of the closing member, followed by return to theelastically unconstrained position of the said portion after thecrossing of the bead or cord.

The container may be at least partially made of thermoplastic material.Examples of thermoplastic materials that may be mentioned includepolypropylene or polyethylene.

Alternatively, the container is made of non-thermoplastic material,especially glass or metal (or alloy).

The container may have rigid walls or deformable walls, especially inthe form of a tube or a tubular bottle.

The container may comprise means for distributing or facilitating thedistribution of the composition. By way of example, the container mayhave deformable walls so as to allow the composition to exit in responseto a positive pressure inside the container, this positive pressurebeing caused by elastic (or non-elastic) squeezing of the walls of thecontainer. Alternatively, especially when the product is in the form ofa stick, the product may be driven out by a piston mechanism. Still inthe case of a stick, especially of makeup product (lipstick, foundation,etc.), the container may comprise a mechanism, especially a rackmechanism, a threaded-rod mechanism or a helical groove mechanism, andmay be capable of moving a stick in the direction of the said aperture.Such a mechanism is described, for example, in patent FR 2 806 273 or inpatent FR 2 775 566. Such a mechanism for a liquid product is describedin patent FR 2 727 609.

The container may consist of a carton with a base delimiting at leastone housing containing the composition, and a lid, especiallyarticulated on the base, and capable of at least partially covering thesaid base. Such a carton is described, for example, in patentapplication WO 03/018423 or in patent FR 2 791 042.

The container may be equipped with a drainer arranged in the region ofthe aperture of the container. Such a drainer makes it possible to wipethe applicator and possibly the rod to which it may be securelyfastened. Such a drainer is described, for example, in patent FR 2 792618.

The composition may be at atmospheric pressure inside the container (atroom temperature) or pressurized, especially by means of a propellentgas (aerosol). In the latter case, the container is equipped with avalve (of the type used for aerosols).

The content of the patents or patent applications mentioned above areincorporated by reference into the present patent application.

The invention is illustrated in greater detail by the examples describedbelow.

EXAMPLE 1 Preparation of a poly(isobornyl acrylate/isobutylmethacrylate/2-ethylhexyl acrylate) polymer

100 g of isododecane are introduced into a 1 litre reactor and thetemperature is then increased so as to pass from room temperature (25°C.) to 90° C. over 1 hour.

120 g of isobornyl acrylate, 90 g of isobutyl methacrylate, 110 g ofisododecane and 1.8 g of2,5-bis(2-ethylhexanoylperoxy)-2,5-dimethylhexane (Trigonox® 141 fromAkzo Nobel) are then added, at 90° C. and over 1 hour.

The mixture is maintained at 90° C. for 1 hour 30 minutes.

90 g of 2-ethylhexyl acrylate, 90 g of isododecane and 1.2 g of2,5-bis(2-ethylhexanoyl-peroxy)-2,5-dimethylhexane are then introducedinto the above mixture, still at 90° C. and over 30 minutes.

The mixture is maintained at 90° C. for 3 hours and is then cooled.

A solution containing 50% polymer active material in isododecane isobtained.

A polymer comprising a poly(isobornyl acrylate/isobutyl methacrylate)first block with a Tg of 80° C., a poly-2-ethylhexyl acrylate secondblock with a Tg of −70° C. and an intermediate block that is anisobornyl acrylate/isobutyl methacrylate/2-ethylhexyl acrylate randompolymer is obtained.

This polymer has a weight-average mass of 77 000 and a number-averagemass of 19 000, i.e. a polydispersity index I of 4.05.

EXAMPLE 2 Preparation of a poly(isobornyl acrylate/isobornylmethacrylate/2-ethylhexyl acrylate) polymer

100 g of isododecane are introduced into a 1 litre reactor and thetemperature is then increased so as to pass from room temperature (25°C.) to 90° C. over 1 hour.

105 g of isobornyl acrylate, 105 g of isobornyl methacrylate, 110 g ofisododecane and 1.8 g of2,5-bis(2-ethylhexanoylperoxy)-2,5-dimethylhexane (Trigonox® 141 fromAkzo Nobel) are then added, at 90° C. and over 1 hour.

The mixture is maintained at 90° C. for 1 hour 30 minutes.

90 g of 2-ethylhexyl acrylate, 90 g of isododecane and 1.2 g of2,5-bis(2-ethylhexanoyl-peroxy)-2,5-dimethylhexane are then introducedinto the above mixture, still at 90° C. and over 30 minutes.

The mixture is maintained at 90° C. for 3 hours and is then cooled.

A solution containing 50% polymer active material in isododecane isobtained.

A polymer comprising a poly(isobornyl acrylate/isobornyl methacrylate)first block with a Tg of 110° C., a poly-2-ethylhexyl acrylate secondblock with a Tg of −70° C. and an intermediate block that is anisobornyl acrylate/isobornyl methacrylate/2-ethylhexyl acrylate randompolymer is obtained.

This polymer has a weight-average mass of 103 900 and a number-averagemass of 21 300, i.e. a polydispersity index I of 4.89.

EXAMPLE 3 Preparation of a poly(isobornyl acrylate/isobutylmethacrylate/isobutyl acrylate) polymer

100 g of isododecane are introduced into a 1 litre reactor and thetemperature is then increased so as to pass from room temperature (25°C.) to 90° C. over 1 hour.

120 g of isobornyl acrylate, 90 g of isobutyl methacrylate, 110 g ofisododecane and 1.8 g of2,5-bis(2-ethylhexanoylperoxy)-2,5-dimethylhexane (Trigonox® 141 fromAkzo Nobel) are then added, at 90° C. and over 1 hour.

The mixture is maintained at 90° C. for 1 hour 30 minutes.

90 g of isobutyl acrylate, 90 g of isododecane and 1.2 g of2,5-bis(2-ethylhexanoyl-peroxy)-2,5-dimethylhexane are then introducedinto the above mixture, still at 90° C. and over 30 minutes.

The mixture is maintained at 90° C. for 3 hours and is then cooled.

A solution containing 50% polymer active material in isododecane isobtained.

A polymer comprising a poly(isobornyl acrylate/isobutyl methacrylate)first block with a Tg of 75° C., a polyisobutyl acrylate second blockwith a Tg of −20° C. and an intermediate block that is an isobornylacrylate/isobutyl methacrylate/isobutyl acrylate random polymer isobtained.

This polymer has a weight-average mass of 144 200 and a number-averagemass of 49 300, i.e. a polydispersity index I of 2.93.

EXAMPLE 4

A liquid lipstick having the composition below was prepared: Blockpolymer of Example 2 at 50% by weight in isododecane 50 gHydrophobic-treated fumed silica (Aerosil R 972 from 5 g Degussa)Hydrogenated polyisobutylene (parleam oil) 2.1 g Octyldodecanol 0.9 gPhenyl silicone oil (Dow Corning 556 C) 2.1 gPolyvinylpyrrolidone/eicosene copolymer (Antaron V220 from ISP) 1.2 gPigments 3 g Isododecane qs 100 g

The octyldodecanol, the silicone oil, the parleam oil and thepolyvinylpyrrolidone/eicosene copolymer are mixed together with heatingat about 60° C. A ground pigmentary mixture of the pigments is made withthis mixture by grinding the mixture three times in a three-roll mill.

The ground pigmentary mixture, the isododecane and the block polymer arethen mixed together at room temperature and the silica is then finallyintroduced. The formulation is then introduced into a leaktight heatingbottle.

The transfer resistance of the lipstick obtained is then measuredaccording to the measuring protocol described above.

The lipstick forms a film that has a transfer of 0%.

EXAMPLE 5

A liquid lipstick having a composition similar to that of Example 4, inwhich the polymer of Example 2 has been replaced with the polymer ofExample 1 in the same amount, was prepared.

The lipstick obtained forms a film that has a transfer of 0%, measuredaccording to the protocol described above.

EXAMPLE 6

A liquid lipstick having the composition below was prepared: Blockpolymer of Example 3 at 50% by weight in isododecane 90.7 gHydrophobic-treated fumed silica (Aerosil R 972 from 5 g Degussa)Hydrogenated polyisobutylene (parleam oil) 2.1 g Octyldodecanol 0.9 gPhenyl Silicone oil (Dow Corning 556 C) 2.1 gPolyvinylpyrrolidone/eicosene copolymer (Antaron V220 from ISP) 1.2 gPigments 3 g

The lipstick obtained forms a film that has a transfer of 4%, measuredaccording to the protocol described above.

1. Cosmetic composition comprising at least one cosmetically acceptableorganic liquid medium and at least one styrene-free film-forming linearblock ethylenic polymer, the said polymer being such that, when it ispresent in sufficient amount in the composition, the said composition iscapable of forming a deposit that has a transfer of less than or equalto 35%.
 2. Lip makeup composition comprising at least one cosmeticallyacceptable organic liquid medium and at least one non-elastomericfilm-forming linear block ethylenic polymer, the said polymer being suchthat, when it is present in sufficient amount in the composition, thesaid composition is capable of forming a deposit that has a transfer ofless than or equal to 35%.
 3. Composition according to claim 1 or 2,characterized in that it is capable of forming a deposit that has atransfer of less than or equal to 30%, preferably less than or equal to25%, preferably less than or equal to 20%, preferably less than or equalto 15%, preferably less than or equal to 10% and preferably less than orequal to 5%.
 4. Composition according to one of the preceding claims,characterized in that the block polymer is not soluble at an activematerial content of at least 1% by weight in water or in a mixture ofwater and of linear or branched lower monoalcohols containing from 2 to5 carbon atoms, without pH modification, at room temperature (25° C.).5. Composition according to any one of the preceding claims,characterized in that the block polymer comprises at least one firstblock and at least one second block that have different glass transitiontemperatures (Tg), the said first and second blocks being connectedtogether via an intermediate block comprising at least one constituentmonomer of the first block and at least one constituent monomer of thesecond block.
 6. Composition according to the preceding claim,characterized in that the first and second blocks are such that thedifference between the glass transition temperatures (Tg) of the firstand second blocks is greater than 10° C., preferably greater than 20°C., preferentially greater than 30° C. and more preferentially greaterthan 40° C.
 7. Composition according to claim 5 or 6, characterized inthat the intermediate block has a glass transition temperature that isbetween the glass transition temperatures of the first and secondblocks.
 8. Composition according to any one of claims 5 to 7,characterized in that the first and second blocks of the said blockpolymer are mutually incompatible.
 9. Composition according to one ofclaims 5 to 8, characterized in that the block polymer has apolydispersity index of greater than 2, preferably greater than or equalto 2.5, preferably greater than or equal to 2.8 and preferably between2.8 and
 6. 10. Composition according to any one of claims 5 to 9,characterized in that the first block of the block polymer is chosenfrom: a) a block with a Tg of greater than or equal to 40° C., b) ablock with a Tg of less than or equal to 20° C., c) a block with a Tg ofbetween 20 and 40° C., and the second block is chosen from a categorya), b) or c) different from the first block.
 11. Composition accordingto any one of claims 5 to 10, characterized in that the block polymercomprises at least one first block with a glass transition temperature(Tg) of greater than or equal to 40° C. and at least one second blockwith a glass transition temperature of less than or equal to 20° C. 12.Composition according to the preceding claim, characterized in that theproportion of the first block ranges from 20% to 90%, better still from30% to 80% and even better still from 50% to 70% by weight of thepolymer.
 13. Composition according to claim 11 or 12, characterized inthat the proportion of the second block with a Tg of less than or equalto 20° C. ranges from 5% to 75%, better still from 15% to 50% and evenbetter still from 25% to 45% by weight of the polymer.
 14. Compositionaccording to claims 5 to 10, characterized in that the block polymercomprises at least one first block with a glass transition temperature(Tg) of between 20 and 40° C. and at least one second block with a glasstransition temperature of less than or equal to 20° C. or a glasstransition temperature of greater than or equal to 40° C. 15.Composition according to the preceding claim, characterized in that theproportion of the first block with a Tg of between 20 and 40° C. rangesfrom 10% to 85%, better still from 30% to 80% and even better still from50% to 70% by weight of the polymer.
 16. Composition according to claim14 or 15, characterized in that the second block has a Tg of greaterthan or equal to 40° C.
 17. Composition according to any one of claims14 to 16, characterized in that the proportion of the second block witha Tg of greater than or equal to 40° C. ranges from 10% to 85%,preferably from 20% to 70% and better still from 30% to 70% by weight ofthe polymer.
 18. Composition according to claim 14 or 15, characterizedin that the second block has a Tg of less than or equal to 20° C. 19.Composition according to one of claims 10 to 12 and 18, characterized inthat the proportion of the block with a glass transition temperature ofless than or equal to 20° C. ranges from 20% to 90%, better still from30% to 80% and even better still from 50% to 70% by weight of thepolymer.
 20. Composition according to any one of claims 10 to 19,characterized in that the block with a Tg of greater than or equal to40° C. is totally or partially derived from one or more monomers whosehomopolymer has a glass transition temperature of greater than or equalto 40° C., especially a Tg ranging from 40 to 150° C., preferablygreater than or equal to 50° C., especially ranging from 50° C. to 120°C. and preferentially greater than or equal to 60° C., especiallyranging from 60° C. to 120° C.
 21. Composition according to thepreceding claim, characterized in that the block with a Tg of greaterthan or equal to 40° C. is a copolymer derived from monomers whosehomopolymer has a glass transition temperature of greater than or equalto 40° C.
 22. Composition according to either of claims 20 and 21,characterized in that the monomers whose homopolymer has a glasstransition temperature of greater than or equal to 40° C. are chosenfrom the following monomers: methacrylates of formula CH₂═C(CH₃)—COOR₁in which R₁ represents a linear or branched unsubstituted alkyl groupcontaining from 1 to 4 carbon atoms, such as a methyl, ethyl, propyl orisobutyl group or R₁ represents a C₄ to C₁₂ cycloalkyl group, acrylatesof formula CH₂═CH—COOR₂ in which R₂ represents a C₄ to C₁₂ cycloalkylgroup such as isobornyl acrylate or a tert-butyl group,(meth)acrylamides of formula:

in which R₇ and R₈, which may be identical or different, each representa hydrogen atom or a linear or branched alkyl group of 1 to 12 carbonatoms, such as an n-butyl, t-butyl, isopropyl, isohexyl, isooctyl orisononyl group; or R₇ represents H and R₈ represents a1,1-dimethyl-3-oxobutyl group, and R′ denotes H or methyl, and mixturesthereof.
 23. Composition according to any one of claims 20 to 22,characterized in that the monomers whose homopolymer has a glasstransition temperature of greater than or equal to 40° C. are chosenfrom methyl methacrylate, isobutyl methacrylate and isobornyl(meth)acrylate, and mixtures thereof.
 24. Composition according to anyone of claims 10 to 20, 22 and 23, characterized in that the block witha Tg of greater than or equal to 40° C. is a homopolymer. 25.Composition according to any one of claims 10 to 14, 18 and 19,characterized in that the block with a Tg of less than or equal to 20°C. is totally or partially derived from one or more monomers whosehomopolymer has a glass transition temperature of less than or equal to20° C., especially ranging from −100 to 20° C., preferably less than orequal to 15° C., especially ranging from −80° C. to 15° C. andpreferentially less than or equal to 10° C., especially ranging from−50° C. to 0° C.
 26. Composition according to the preceding claim,characterized in that the monomers whose homopolymer has a glasstransition temperature of less than or equal to 20° C. are chosen fromthe following monomers: acrylates of formula CH₂═CHCOOR₃, R₃representing a linear or branched C₁ to C₁₂ unsubstituted alkyl group,with the exception of the tert-butyl group, in which one or more heteroatoms chosen from O, N and S is (are) optionally intercalated;methacrylates of formula CH₂═C(CH₃)—COOR₄, R₄ representing a linear orbranched C₆ to C₁₂ unsubstituted alkyl group, in which one or morehetero atoms chosen from O, N and S is (are) optionally intercalated;vinyl esters of formula R₅—CO—O—CH═CH₂ in which R₅ represents a linearor branched C₄ to C₁₂ alkyl group, C₄ to C₁₂ alkyl vinyl ethers, such asmethyl vinyl ether and ethyl vinyl ether; N—(C₄ to C₁₂)alkylacrylamides, such as N-octylacryl-amide, and mixtures thereof. 27.Composition according to claim 25 or 26, characterized in that themonomers whose homopolymer has a glass transition temperature of lessthan or equal to 20° C. are chosen from alkyl acrylates whose alkylchain contains from 1 to 10 carbon atoms, with the exception of thetert-butyl group.
 28. Composition according to any one of claims 10 to15 and 19 to 27, characterized in that the block with a glass transitiontemperature of less than or equal to 20° C. is a homopolymer. 29.Composition according to any one of claims 10 and 14 to 28,characterized in that the block with a Tg of between 20 and 40° C. istotally or partially derived from one or more monomers whose homopolymerhas a glass transition temperature of between 20 and 40° C. 30.Composition according to any one of claims 10 and 14 to 29,characterized in that the block with a Tg of between 20 and 40° C. is ahomopolymer of a monomer chosen from n-butyl methacrylate, cyclodecylacrylate, neopentyl acrylate and isodecylacrylamide.
 31. Compositionaccording to any one of claims 10 and 14 to 29, characterized in thatthe block with a Tg of between 20 and 40° C. is a copolymer totally orpartially derived from: monomers whose homopolymer has a Tg of greaterthan or equal to 40° C., especially a Tg ranging from 40° C. to 150° C.,preferably greater than or equal to 50° C., especially ranging from 50to 120° C., and preferentially greater than or equal to 60° C.,especially ranging from 60° C. to 120° C., and monomers whosehomopolymer has a Tg of less than or equal to 20° C., especially rangingfrom −100 to 20° C., preferably less than or equal to 15° C., especiallyranging from −80° C. to 15° C., and preferentially less than or equal to10° C., for example ranging from −50° C. to 0° C.
 32. Compositionaccording to any one of claims 10, 14 to 29 and 31, characterized inthat the block with a Tg of between 20 and 40° C. is totally orpartially derived from monomers chosen from methyl methacrylate,isobornyl (meth)acrylate, trifluoroethyl methacrylate, butyl acrylateand 2-ethylhexyl acrylate, and mixtures thereof.
 33. Compositionaccording to any one of claims 10 to 23, 25 to 27, 29, 31 and 32,characterized in that the first block and/or the second blockcomprise(s) at least one additional monomer.
 34. Composition accordingto the preceding claim, characterized in that the additional monomer ischosen from hydrophilic monomers, monomers containing ethylenicunsaturation comprising one or more silicon atoms, and mixtures thereof.35. Composition according to claim 33 or 34, characterized in that theadditional monomer is chosen from: ethylenically unsaturated monomerscomprising at least one carboxylic or sulfonic acid function,methacrylates of formula CH₂═C(CH₃)—COOR₆ in which R₆ represents alinear or branched alkyl group containing from 1 to 4 carbon atoms, thesaid alkyl group being substituted with one or more substituents chosenfrom hydroxyl groups and halogen atoms, methacrylates of formulaCH₂═C(CH₃)—COOR₉, R₉ representing a linear or branched C₆ to C₁₂ alkylgroup in which one or more hetero atoms chosen from O, N and S is (are)optionally intercalated, the said alkyl group being substituted with oneor more substituents chosen from hydroxyl groups and halogen atoms;acrylates of formula CH₂═CHCOOR₁₀, R₁₀ representing a linear or branchedC₁ to C₁₂ alkyl group substituted with one or more substituents chosenfrom hydroxyl groups and halogen atoms, or R₁₀ represents a C₁ to C₁₂alkyl-O—POE (polyoxyethylene) with repetition of the oxyethylene unit 5to 30 times, or R₁₀ represents a polyoxyethylenated group comprisingfrom 5 to 30 ethylene oxide units; ethylenically unsaturated monomerscomprising at least one tertiary amine function, and mixtures thereof.36. Composition according to any one of claims 33 to 35, characterizedin that the additional monomer(s) is (are) chosen from acrylic acid,methacrylic acid and trifluoroethyl methacrylate, and mixtures thereof.37. Composition according to one of claims 33 to 36, characterized inthat the additional monomer(s) represent(s) from 1% to 30% by weight,relative to the total weight of the first and/or second blocks. 38.Composition according to one of claims 10 to 37, characterized in thateach of the first and second blocks comprises at least one monomerchosen from (meth)acrylic acid esters, and optionally at least onemonomer chosen from (meth)acrylic acid, and mixtures thereof. 39.Composition according to one of claims 10 to 38, characterized in thateach of the first and second blocks is totally derived from at least onemonomer chosen from (meth)acrylic acid esters, and optionally from atleast one monomer chosen from (meth)acrylic acid, and mixtures thereof.40. Composition according to any one of claims 2 to 39, characterized inthat the block polymer is styrene-free.
 41. Composition according to oneof the preceding claims, characterized in that the block polymer has aweight-average mass (Mw) of less than or equal to 300 000, preferablyranging from 35 000 to 200 000 and better still ranging from 45 000 to150
 000. 42. Composition according to one of the preceding claims,characterized in that the block polymer has a number-average mass (Mn)of less than or equal to 70 000, preferably ranging from 10 000 to 60000 and better still ranging from 12 000 to 50
 000. 43. Compositionaccording to one of claims 1 and 3 to 42, characterized in that theblock polymer is not an elastomer.
 44. Composition according to any oneof the preceding claims, characterized in that the block polymer ispresent in a content ranging from 0.1% to 60% by weight, preferablyranging from 0.5% to 50% by weight and more preferably ranging from 1%to 40% by weight, relative to the total weight of the composition. 45.Composition according to any one of the preceding claims, characterizedin that it comprises a volatile oil.
 46. Composition according to anyone of the preceding claims, characterized in that it comprises avolatile oil chosen from octamethylcyclotetrasiloxane,decamethylcyclopentasiloxane, dodecamethylcyclohexa-siloxane,heptamethylhexyltrisiloxane, heptamethyl-octyltrisiloxane,octamethyltrisiloxane, decamethyl-tetrasiloxane, isododecane, isodecaneand isohexadecane.
 47. Composition according to claim 45 or 46,characterized in that the volatile oil is present in a content rangingfrom 1% to 70% by weight, preferably ranging from 5% to 50% by weightand preferentially ranging from 10% to 35% by weight, relative to thetotal weight of the composition.
 48. Composition according to any one ofthe preceding claims, characterized in that it comprises a non-volatileoil.
 49. Composition according to the preceding claim, characterized inthat the non-volatile oil is chosen from hydrocarbon-based non-volatileoils and silicone non-volatile oils.
 50. Composition according to claim48 or 49, characterized in that the non-volatile oil is present in acontent ranging from 1% to 80% by weight, preferably ranging from 5% to60% by weight, preferentially ranging from 10% to 50% by weight andespecially ranging from 20% to 50% by weight, relative to the totalweight of the composition.
 51. Composition according to any one of thepreceding claims, characterized in that it comprises at least one fattysubstance that is solid at room temperature, chosen from waxes, pastyfatty substances and gums, and mixtures thereof.
 52. Compositionaccording to any one of the preceding claims, characterized in that itcontains from 0.1% to 50% by weight and preferably from 1% to 30% byweight of waxes, relative to the total weight of the composition. 53.Composition according to any one of the preceding claims, characterizedin that it comprises a dyestuff.
 54. Composition according to any one ofthe preceding claims, characterized in that it comprises a cosmeticingredient chosen from additional film-forming polymers, vitamins,thickeners, trace elements, softeners, sequestering agents, fragrances,acidifying or basifying agents, preserving agents, sunscreens,surfactants and antioxidants, or mixtures thereof.
 55. Cosmeticcomposition according to any one of the preceding claims, characterizedin that it is in the form of a paste or a stick.
 56. Cosmeticcomposition according to any one of the preceding claims, characterizedin that it is in anhydrous form.
 57. Cosmetic assembly comprising: a) acontainer delimiting at least one compartment, the said container beingclosed by a closing member; and b) a composition placed inside the saidcompartment, the composition being in accordance with any one of thepreceding claims.
 58. Cosmetic assembly according to claim 57,characterized in that the container is at least partially formed from atleast one thermoplastic material.
 59. Cosmetic assembly according toclaim 57, characterized in that the container is at least partiallyformed from at least one non-thermoplastic material, especially glass ormetal.
 60. Assembly according to any one of claims 57 to 59,characterized in that, in the closed position of the container, theclosing member is screwed onto the container.
 61. Assembly according toany one of claims 57 to 60, characterized in that, in the closedposition of the container, the closing member is coupled to thecontainer other than by screwing, especially by click-fastening, bondingor welding.
 62. Assembly according to any one of claims 57 to 61,characterized in that the composition is pressurized inside thecontainer.
 63. Assembly according to any one of claims 57 to 61,characterized in that the composition is substantially at atmosphericpressure inside the container.
 64. Non-therapeutic cosmetic process formaking up or caring for keratin materials, in particular the skin or thelips, comprising the application to the keratin materials, in particularthe skin or the lips, of a composition according to any one of claims 1to
 56. 65. Use of a composition according to any one of claims 1 to 56,to obtain a transfer-resistant deposit, especially a transfer-resistantmakeup result, on keratin materials, in particular on the skin or thelips.
 66. Use of a styrene-free and/or non-elastomeric film-forminglinear block ethylenic polymer in a cosmetic composition comprising acosmetically acceptable organic liquid medium, the said polymer beingsuch that, when it is present in sufficient amount in the composition,the said composition is capable of forming a deposit that has a transferof less than or equal to 35%, to obtain a transfer-resistant deposit,especially a transfer-resistant makeup result, on keratin materials, inparticular on the skin or the lips.